Value Collection ZMSCS70906 Silicone O-ring Dash 906 50-pack

Product Description

The VALUE COLLECTION ZMSCS70906 is a Dash 906 silicone O-ring designed for use as a boss gasket on straight-thread tube fittings. It measures 0.468 inches inside diameter, 0.624 inches outside diameter, and 0.078 inches thick with a round cross section. The silicone compound provides a wide service temperature range of -80 degrees F to 450 degrees F, making it suitable for dry heat, weather, and ozone-exposed environments. Hardness is rated at 70 Shore A. This listing is sold as a pack of 50 rings. Plumbers, pipefitters, HVAC technicians, and industrial maintenance trades install this style of fitting seal routinely.

This O-ring is intended for boss-port sealing on straight-thread hydraulic and fluid fittings across residential, commercial, and light industrial plumbing and HVAC piping systems. The silicone material offers good resistance to oils, chemicals, and solvents, though oil resistance is limited and should be evaluated against specific system fluid compatibility before installation. It is well suited for applications requiring reliable sealing across wide temperature swings, including outdoor-exposed or high-heat equipment.

Key Features

• Dash 906 silicone O-ring for straight-thread tube fitting boss ports
• Service temperature range: -80 degrees F to 450 degrees F
• Round cross section, 0.078 inches thick (5/64 inch nominal)
• 70 Shore A hardness rating
• Compatible with oils, chemicals, and solvents; limited oil resistance noted
• Good weather and ozone resistance for outdoor or exposed installations
• Pack quantity of 50 rings per order

Compatibility

Designed as an OEM-style replacement or service seal for straight-thread tube fitting boss ports requiring a Dash 906 silicone O-ring.

Installation Notes

Depressurize and drain the system before removing or replacing any fitting seals. Inspect the boss port seat for nicks or corrosion that could prevent a proper seal. Lubricate the O-ring lightly with a compatible fluid or assembly lubricant before seating to avoid twisting or rolling during installation. Work performed on pressurized fluid or refrigerant systems must follow applicable codes including IPC or applicable mechanical codes for the jurisdiction.